hoodlemI use Proton Mail. I recommend that whatever service you decide on, get your own domain name so you can keep your email address if you move to a different provider.
Do you have any recommendations on how to buy a domain?
IIRC Cloudflare is the only registrar that doesn’t mark up from wholesale prices, or something like that. Basically makes them cheaper than most other registrars. I think the point is that they can then sell you their other (related) services more easily — the services that actually make them money.